wabt

99c860c4 - wasm2c runtime: fix mis-nesting of def'n of os_has_altstack_installed (#2346)

wasm2c runtime: fix mis-nesting of def'n of os_has_altstack_installed (#2346) Also adds an RLBox-like CI test where the embedder takes responsibility for signal handling Co-authored-by: wrv <wrv@utexas.edu>